Period

A horizontal row of elements of the periodic table. Period. In Science, a period is a row in the periodic table where elements have the same number of electron shells.

Period Definition - Easy to Understand | GradesUp.gg
Period Definition - Easy to Understand | GradesUp.gg

Period: A horizontal row of elements of the periodic table. Period. In Science, a period is a row in the periodic table where elements have the same number of electron shells.

GradesUp

Study: Students took a test on unknown facts in Chemistry and scored an average of 10%. After using GradesUp while playing games for 5 hours, their average score increased to over 70%.